<header>Recover volume</header>
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<p>It can make books uncomplete at the following conditions:first,it appear problems in the book,user moves away the disks from the book.another,user restarts NAS after moving away a disk,and install the disk moved before after shutdown service.and then the datas perhaps have got changed.as far as the safty of datas,the software of disk manager in NAS system does't increase the disk which has move away into the book by itself .
so the disk will be uncompleted at this time .only use RAID1,RAID5,it will need recover book.</p>

<p>It's slow to recover volume.at this time ,if there are some books in synchronous,the proceed will be delayed.</p>
<p>Only choose a leisure disk and add uncompleted books,the disk manager of NAS will finish cecover by itself.</p>
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